def testIntersectionRuleBased(self):
"""
Test that rule based renderer using intersection clip paths correctly uses original feature area for rule
evaluation, not clipped area
"""
poly_layer = QgsVectorLayer(os.path.join(TEST_DATA_DIR, 'polys.shp'))
self.assertTrue(poly_layer.isValid())
sym1 = QgsFillSymbol.createSimple({'color': '#ff00ff', 'outline_color': '#000000', 'outline_width': '1'})
sym2 = QgsFillSymbol.createSimple({'color': '#00ffff', 'outline_color': '#000000', 'outline_width': '1'})
r1 = QgsRuleBasedRenderer.Rule(sym1, 0, 0, 'area($geometry)>25')
r2 = QgsRuleBasedRenderer.Rule(sym2, 0, 0, 'ELSE')
rootrule = QgsRuleBasedRenderer.Rule(None)
rootrule.appendChild(r1)
rootrule.appendChild(r2)
renderer = QgsRuleBasedRenderer(rootrule)
poly_layer.setRenderer(renderer)
mapsettings = QgsMapSettings()
mapsettings.setOutputSize(QSize(400, 400))
mapsettings.setOutputDpi(96)
mapsettings.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:3857'))
mapsettings.setExtent(QgsRectangle(-13875783.2, 2266009.4, -8690110.7, 6673344.5))
mapsettings.setLayers([poly_layer])
mapsettings.setEllipsoid('')
region = QgsMapClippingRegion(QgsGeometry.fromWkt(
'Polygon ((-11725957 5368254, -12222900 4807501, -12246014 3834025, -12014878 3496059, -11259833 3518307, -10751333 3621153, -10574129 4516741, -10847640 5194995, -11105742 5325957, -11725957 5368254))'))
region.setFeatureClip(QgsMapClippingRegion.FeatureClippingType.ClipToIntersection)
region2 = QgsMapClippingRegion(QgsGeometry.fromWkt(
'Polygon ((-11032549 5421399, -11533344 4693167, -11086481 4229112, -11167378 3742984, -10616504 3553984, -10161936 3925771, -9618766 4668482, -9472380 5620753, -10115709 5965063, -11032549 5421399))'))
region2.setFeatureClip(QgsMapClippingRegion.FeatureClippingType.ClipToIntersection)
mapsettings.addClippingRegion(region)
mapsettings.addClippingRegion(region2)
renderchecker = QgsMultiRenderChecker()
renderchecker.setMapSettings(mapsettings)
renderchecker.setControlPathPrefix('vectorlayerrenderer')
renderchecker.setControlName('expected_intersection_rule_based')
result = renderchecker.runTest('expected_intersection_rule_based')
self.report += renderchecker.report()
self.assertTrue(result)
# also try with symbol levels
renderer.setUsingSymbolLevels(True)
poly_layer.setRenderer(renderer)
renderchecker = QgsMultiRenderChecker()
renderchecker.setMapSettings(mapsettings)
renderchecker.setControlPathPrefix('vectorlayerrenderer')
renderchecker.setControlName('expected_intersection_rule_based')
result = renderchecker.runTest('expected_intersection_rule_based')
self.report += renderchecker.report()
self.assertTrue(result)
